Due to its critical tone and tragic ending, the story has been called a "cautionary tale of the decadent downside of the American dream." You can debate whether the big-budget Leo DiCaprio movie adaptation grasped the message of the book, but we know one group of people who absolutely didn't.
The Fans Who Missed the Point
Yeah, it turns out that when your story has rich people dressed fabulously in opulent surroundings drinking classy liquor, fans aren't as likely to say "Look at the selfishness, hypocrisy, and moral vacuum" as they are to say "That party is AWESOME. Let's do that." For instance, rich people love throwing non-ironic "Gatsby parties," unaware that invoking the name of the novel basically amounts to admitting that the world would be a much better place without you.
A few years ago, Prince Harry attended a Gatsby-themed 21st birthday party that cost $25,000 to throw. The following year, Paul McCartney threw his own expensive Gatsby birthday gala (although they're Brits, so in their case we could at least understand why they'd want to dance on the corpse of the American dream). Meanwhile, if you dare venture into Pinterest, you'll find page after page of users collecting material for Gatsby-themed weddings. As Zachary Seward of The Atlantic puts it, "It's like throwing a Lolita-themed children's birthday party."